7 afcs annunciations and alerts, Afcs status alerts, Automatic flight control system – Garmin G1000 King Air C90GT User Manual

Page 460

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Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT

190-00663-01 Rev. A

446

AUTOMATIC FLIGHT CONTROL SYSTEM

SY

STEM

O

VER

VIEW

FLIGHT

INSTRUMENTS

EIS

AUDIO P

ANEL

& CNS

FLIGHT

MANA

GEMENT

HAZARD

AV

OID

ANCE

AFCS

ADDITIONAL FEA

TURES

APPENDICES

INDEX

7.7 AFCS ANNUNCIATIONS AND ALERTS

AFCS STATUS ALERTS

The annunciations in Table 7-5 (listed in order of increasing priority) can appear on the PFDs above the

Airspeed and Attitude indicators. Only one annunciation may occur at a time, and messages are prioritized by
criticality.

Figure 7-45 AFCS Status Annunciation

AFCS Status

Annunciation

Alert Condition

Annunciation

Description

Rudder Mistrim Right

Yaw servo providing sustained force in the indicated direction

Rudder Mistrim Left

Aileron Mistrim Right

Roll servo providing sustained force in the indicated direction

Aileron Mistrim Left

Elevator Mistrim Down

Pitch servo providing sustained force in the indicated direction

Elevator Mistrim Up

Pitch Trim Failure

(or stuck MEPT Switch)

If AP engaged, take control of the aircraft and disengage AP
If AP disengaged, move MEPT switches separately to unstick

Yaw Damper Failure

YD control failure; AP also inoperative

Roll Failure

Roll axis control failure; AP and YD inoperative

Pitch Failure

Pitch axis control failure; AP and YD inoperative

System Failure

AP and MEPT are unavailable; FD may still be available, but YD inoperative

Preflight Test

Performing preflight system test; aural alert sounds at completion
Do not press the AP/YD DISC Switch during servo power-up and preflight system
tests as this may cause the preflight system test to fail or never to start (if servos
fail their power-up tests). Power must be cycled to the servos to remedy the
situation.
Preflight system test failed; aural alert sounds at failure

Table 7-5 AFCS Status Alerts

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